There are so many variables to consider.
While I would not want to give any suggestions as to how you ought to go about training this individual, I surely would encourage you to do the following before you begin training your client:
1. Make sure you understand the anatomy of the hip joint.
2. Make sure you know what type of replacement your client has had.
3. Make sure you speak with her orthopaedist as well as her physiotherapist to make sure there is isn’t any contraindications to exercise. I am quite sure that there are.
Questions to consider:
1. How long ago did she have the surgery.
2. If she had the surgery 3-4 four months ago and you are not prepared to work with people with hip replacements I believe you are taking a huge risk.
3. If your client is having pain, it might not be a good idea to train her.
4. If he/she is still using an assistive device to walk, I wouldn’t touch it.
I hope this gives you a little food for thought as to how you should go about approaching your new client and I wish you the best.