I am a single person on a similar salary with a similar mortgage - it can be done!
However, I would look closely at your take home pay, I would have about 400 euro extra per month than you, perhaps you have deductions at source you havent mentioned, or maybe your husband has some of your tax credits, you need to examine this closely. As vandriver says 2K is low for your salary.
You will also have additional tax credits for a child, child benefit and later down the line, maintenance payments. I think your available income should be closer to 3K each month to meet your expenses, on that figure 1100 per month for the mortgage is ok, but you will also have a lot of expenses I dont, childcare is the obvious one that springs to mind. Children get sick and need to see a doctor more than adults might, grow out of clothes and shoes etc, perhaps your child is older and you have school going expenses, I dont know.
You need to be realistic, sit down and work out what is coming in and what will be going out, and then decide if you can take on the mortgage yourself.
While I have no personal experience of separation and the agreements of taking over a mortgage etc, a friend went though something similar and took on more than she realised and ended up in debt as Brendan says, with both their lives affected with poor credit ratings etc.