I completely agree with you Steve. I have been sensing that my g/f is getting very picky about the jobs she will consider because she knows I help out. If I wasn't helping, she would take anything that was going, and I have now told her that unless she gets a job I won't help any more, but if she gets a job I will help out and make up the difference for what she needs.
Whatever anyone sends is personal to them and based on what they can afford and how much they feel they should/can help. Everyone will send different amounts based on the above, but it doesn;t matter what anyone else sends, just do what you feel is right for your circumstances. I'm sure she will appreciate whatever you send, and if she doesn't and starts complaining, I would ask why she is really interested in you.