It is probably best for everyone if you do not let her out unattended while she is in season. The female Saint Bernards my family has had both were spayed. Freckles, the big galoot, tried to play up her tummy-scar for sympathy for months, but really, she and Bruni each did fine with the surgery, no complications, fairly quick recovery. Good luck with Suzy, how nice that you rescued her!