Hang onto that woman - there are a thousand guys on this forum that would love to have her aboard their boat.
My wife has bum knees, and until recently, had a great deal of difficulty getting from the pier to the cockpit. Therefore, I first created a gate in the stern rail, one that allows much easier access without trying to climb around the bimini frame and squeeze between it and the stern rail. Next, I constructed a gangway that is nothing more than a 6-foot length of 2 X 12 treated lumber. I installed a 1/2-inch diameter X 4-inch long stainless pin at one end, and then created a socket in the gunwale for the pin to fit into. This allows me to position the plank at just about any angle to the pier, yet still provides her with a safe, stable platform on which to walk from the pier to the gunwale, then step into the cockpit.
Of course, those steps are a bit high, especially for a 74-year-old woman with bad knees. To combat this problem, I purchased a simple, inexpensive, plastic step stool that folds flat for convenient storage. The step stool is about 8 inches high, which is approximately half the height from the gunwale to the top of the lazerette hatch, and about the same from the top of the hatch to the cockpit deck. So once she's on the hatch, I just move the step to the cockpit deck and the step down is no longer a problem.
My next modification for her will be the steps into the main cabin. The ladder is a bit steep, and while there are handholds on both sides of the hatch, I still worry about her climbing down that ladder. Over the upcoming winter, I hope to redesign that ladder and convert it into retractable steps that can be used as a standard ladder when she's not on the boat, or steps when she's aboard. I had thoughts about an electric lift, but when I discovered how much it would cost, and how much battery it would consume, it just wasn't worth it.
All the best,