Would it help to go through them with her and help her visualise the problem at first to help break it down and get a more realistic perspective. Better to try with problems using low numbers initially.
Eg draw 30 little stick children and for each 8 draw a tube (packet of biscuits) round them the get her to count the packets.
As she gets better you could use more complicated ones such as measures of fluid, time, distance and sizes (could use squared paper for this one).
The more fun you can make the problems the more she might be interested eg use characters from her favourite programmes or pop stars and such eg
Kylie is putting on a concert for 1 hour. All her songs last 3 minutes, how many songs can she perform?
Britney has �10.00 and wants to buy some Bratz dolls. The dolls cost �2.50 each, how many can she buy?
Justin has won a load of awards, each measures 10 cm across and his shelf measures 200cm, how many awards can he fit on his shelf?
Cat Deeley wants to run the 26 mile London Marathon (or sponsered swim etc...) for charity, she can run at a constant speed of 4 miles per hour. How long will it take her to finish the marathon (or swim)?
Ant and Dec want to drink the recommended x litres of water a day. Their glass hold x amount of water, how many glasses do they need to drink per day?