my opinion is that you should probably hold off until next year. 1100 grams is still under the desired weight for breeding (females at least). if you want her to gain weight in preparation, I'd suggest feeding smaller meals every 4-6 days rather than one large or "appropriately" sized feeder per week. however, just my opinion, I think you should wait until she weighs at least 1500-1600 grams "empty" (after defecation). again, I haven't attempted any breeding projects yet, but everything I've read would caution against breeding an undersized female.

best of luck.