She had grown stronger and broader. It was difficult to recognize in this robust, motherly woman the slim, lively Natasha of former days, (compound sentence)

She had grown stronger and broader. It was difficult to recognize in this robust, motherly woman the slim, lively Natasha of former days, (compound sentence)

She had grown stronger and broader, so it was difficult to recognize in this robust, motherly woman the slim, lively Natasha of former days