Is it normal to ask for screenshots of bank account?

[Kale Leavitt]

We are in the process of buying a second home with 10% down. We sent in a purchase contract offer and our realtor came back and asked for screenshots of our cash reserves in order to show the seller that we could put 20% down if needed. We felt that this only gave the seller an excuse to ask for more as it showed that we had enough in our account to cover more. As soon as I sent them over I regretted it and the more I thought about it the less okay I was with it. Sure enough, they came back and asked for more. So my question is, is this a normal thing to do? I have never experienced it but have not had very much experience in real estate.