Do you know what the other cm charges? Perhaps you could find out.
Also, are you registered for overnight care? If not you would have to apply to Ofsted before you could do it.
There are special rules - in case you haven't got them the guidelines to the National Standards state:
Annex B Overnight Care
These are additional criteria to be met by childminders who wish
to care for children overnight. (N.B. If a child is cared for a
continuous period of 28 days or more, s/he is regarded as a
foster child and the carer must notify the local Social Services
Department)
Organisation
B.1
The staff:child ratios for the childminding registration are maintained
overnight. The child is within hearing of the childminder (which may be
via a listening device) and has easy access to them during the night.
Physical environment
B.2
Children staying overnight each have a suitable bed or cot and clean
bedding, and there is adequate heating in the premises.
B.3
Children have access to adequate toilet and washing facilities. The
privacy of children is respected and no adult other than the registered
childminder has access to the child during bath-time or when children
are undressing.
Safety
B.4
The sleeping areas do not have any health or safety hazards.
B.5
Appropriate security arrangements are in place in order to protect the
premises from unauthorised entry. No-one over the age of 16 who has
not been police checked stays on the premises overnight when a minded
child is present.
Health
B.6
There is a good general level of hygiene, decoration and cleanliness in
all sleeping areas.
Annex B
Overnight care
National standards for under 8s day care and childminding
26
Page 29
Food and drink
B.7
Suitable meals/feeds/drinks are provided. Requirements are discussed
with parents in advance.
Working with parents
B.8
Parents are shown and consulted with about all the arrangements that will
be made and are in place for their child to be looked after overnight.
There is an exchange of information about the routines at home and in
the provision and, wherever possible, the parents routine is
accommodated.
B.9
The childminder requests information from parents on the child’s sleeping
habits and any problems which may arise during the night, i.e. bedwetting,
nightmares etc. and seek to ensure a consistent and sensitive approach.
Documentation
B.10
No child is received into the provision without emergency contact
numbers being provided. If the parents are unavailable to be contacted,
another named person is available to collect the child if necessary
and confirmation of their agreement to do so is obtained. These details
are included in the contract with parents.
Hope that helps